Mercurial > hg > orthanc-stone
annotate Applications/Resources/Graveyard/Threading/SdlBuffering.cpp @ 2012:637d6373127a
width of the vertical slider has doubled to ease user interactions
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 02 Dec 2022 18:49:06 +0100 |
| parents | 7053b8a0aaec |
| children | 07964689cb0b |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 0 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
| 47 | 9 * modify it under the terms of the GNU Affero General Public License |
| 10 * as published by the Free Software Foundation, either version 3 of | |
| 11 * the License, or (at your option) any later version. | |
| 0 | 12 * |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 47 | 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 * Affero General Public License for more details. | |
|
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17 * |
| 47 | 18 * You should have received a copy of the GNU Affero General Public License |
| 0 | 19 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 20 **/ | |
| 21 | |
| 22 | |
| 23 #include "SdlBuffering.h" | |
| 24 | |
| 25 #if ORTHANC_ENABLE_SDL == 1 | |
| 26 | |
| 84 | 27 #include "../../Resources/Orthanc/Core/Logging.h" |
| 28 #include "../../Resources/Orthanc/Core/OrthancException.h" | |
| 0 | 29 |
| 30 namespace OrthancStone | |
| 31 { | |
| 32 SdlBuffering::SdlBuffering() : | |
| 33 sdlSurface_(NULL), | |
| 34 pendingFrame_(false) | |
| 35 { | |
| 36 } | |
| 37 | |
| 38 | |
| 39 SdlBuffering::~SdlBuffering() | |
| 40 { | |
| 41 if (sdlSurface_) | |
| 42 { | |
| 43 SDL_FreeSurface(sdlSurface_); | |
| 44 } | |
| 45 } | |
| 46 | |
| 47 | |
| 48 void SdlBuffering::SetSize(unsigned int width, | |
| 49 unsigned int height, | |
| 50 IViewport& viewport) | |
| 51 { | |
| 52 boost::mutex::scoped_lock lock(mutex_); | |
| 53 | |
| 54 viewport.SetSize(width, height); | |
| 55 | |
| 56 if (offscreenSurface_.get() == NULL || | |
| 57 offscreenSurface_->GetWidth() != width || | |
| 58 offscreenSurface_->GetHeight() != height) | |
| 59 { | |
| 60 offscreenSurface_.reset(new CairoSurface(width, height)); | |
| 61 } | |
| 62 | |
| 63 if (onscreenSurface_.get() == NULL || | |
| 64 onscreenSurface_->GetWidth() != width || | |
| 65 onscreenSurface_->GetHeight() != height) | |
| 66 { | |
| 67 onscreenSurface_.reset(new CairoSurface(width, height)); | |
| 68 | |
| 69 // TODO Big endian? | |
| 70 static const uint32_t rmask = 0x00ff0000; | |
| 71 static const uint32_t gmask = 0x0000ff00; | |
| 72 static const uint32_t bmask = 0x000000ff; | |
| 73 | |
| 74 if (sdlSurface_) | |
| 75 { | |
| 76 SDL_FreeSurface(sdlSurface_); | |
| 77 } | |
| 78 | |
| 79 sdlSurface_ = SDL_CreateRGBSurfaceFrom(onscreenSurface_->GetBuffer(), width, height, 32, | |
| 80 onscreenSurface_->GetPitch(), rmask, gmask, bmask, 0); | |
| 81 if (!sdlSurface_) | |
| 82 { | |
| 83 LOG(ERROR) << "Cannot create a SDL surface from a Cairo surface"; | |
| 84 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 pendingFrame_ = false; | |
| 89 } | |
| 90 | |
| 91 | |
| 92 bool SdlBuffering::RenderOffscreen(IViewport& viewport) | |
| 93 { | |
| 94 boost::mutex::scoped_lock lock(mutex_); | |
| 95 | |
| 96 if (offscreenSurface_.get() == NULL) | |
| 97 { | |
| 98 return false; | |
| 99 } | |
| 100 | |
| 101 Orthanc::ImageAccessor target = offscreenSurface_->GetAccessor(); | |
| 102 | |
| 103 if (viewport.Render(target) && | |
| 104 !pendingFrame_) | |
| 105 { | |
| 106 pendingFrame_ = true; | |
| 107 return true; | |
| 108 } | |
| 109 else | |
| 110 { | |
| 111 return false; | |
| 112 } | |
| 113 } | |
| 114 | |
| 115 | |
| 116 void SdlBuffering::SwapToScreen(SdlWindow& window) | |
| 117 { | |
| 118 if (!pendingFrame_ || | |
| 119 offscreenSurface_.get() == NULL || | |
| 120 onscreenSurface_.get() == NULL) | |
| 121 { | |
| 122 return; | |
| 123 } | |
| 124 | |
| 125 { | |
| 126 boost::mutex::scoped_lock lock(mutex_); | |
| 127 onscreenSurface_->Copy(*offscreenSurface_); | |
| 128 } | |
| 129 | |
| 130 window.Render(sdlSurface_); | |
| 131 pendingFrame_ = false; | |
| 132 } | |
| 133 } | |
| 134 | |
| 135 #endif |